Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 23:55 and arrives at Seoul Incheon International Airport at 14:20.The flight has a short stop at Shanghai.
The flighttime is about 12h 25m. The distance travelled ("as the bird flies"): 2960 Km. So the average speed is roughly 238 Km.
There is an 2 hour time difference between Jakarta and Seoul
The best day to arrive at Jakarta is Thursday and it would be best to avoid Tuesday, as prices are on average 129.63% higher than on Thursday. (Average prices, based on 3661687 datapoints.)
We have a lot more statistics for flights GA 894 and between Jakarta and Seoul.